Question

(3x-7)²=9x² помогите решить ​

Answer 1

$(3x - 7)^{2} - 9x^{2} = 0$

$9x^{2} - 42x + 49 - 9x^{2} = 0$

$-42x + 49 = 0$

$-42x = -49$

$x = 1.1667$